Samuel c



(No Model.)

s. o. PARSONS.

WATER FILTER.

10.591,006. Patented oet. 5,1897.

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p llivrrnn STATES Parnivr` trier..

TWOfTIIlRDS TO bWATER- TIIOMAS L.

MATTSON, OF SAME PLACE.

FILTER.

SPECIFICATION forming part of Letters Patent N o. 591,006, dated October 5, 1897'. Application filed October 31, 1896. Serial No. 610,679. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL (l. PARSONS, a citizen of the United States, residin gat Philadelphia, in the county of Philadelphia'and Stale of Pennsylvania, have invented a certain ner and useful Improvement in Vater- Filters, of which the following is a specification.

My invention relates to a new and useful improvement in water-iilters, and has for itsV object to so construct and arrange a device of this description as to bring about a perfect filtration of the Water passing therethrough, as of the coarser foreign substances which may be heldin suspension, and iinally to clari` fy the Water by removing therefrom all discoloring agents as Well as chemical impurities. v

A further object of my invention is to provide means whereby a primary iilter will automatically be flushed, so as to relieve coarser particles which may have collected thereon and convey the same to a drain-pipe or other lsuitable receptacle.

With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth, and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation willnovv be described in,

detail, referring to the accompanying draw` ing, which is a sectional view of the primary and secondary filter, the severalA pipes leading to and from the same being in elevation.`

In carrying out my invention I provide a cylindrical casing A, which serveslas the primary filter and is divided into three compartments by the perforated diaphragms B and (Leach of which 4has a wire screen D of line mesh, so as to prevent the material placed Within the several compartments from pass! ing from one compartment to another. The bottom of the casing is concaved and a perforated diaphragm E'rests upon the upper edges of this bottom, so as to form a space therebelow for the outliowing of the Water passing through the filter. The compartment next above the diaphragm E is filled With charcoal, as indicated at F, andgravel G is placed upon the diaphragm B to lill the next compartment.

The su perior com partment of the casing has fitted therein a plunger I, which is provided .with the lianges J, so as to form a receptacle for the sand or gravel K, and over this sand is secured a screen L. The rod M projects upward from the plunger through the gland in the top of the casing and has coiled thereabout a spring N, said spring having a tendency to elevate the plunger within its com partinent, for the purpose hereinafter set forth.

^ The lever O is pivoted at P and to a supporting-arm, and is also pivoted to the plun# ger-rod at one end and to the link Q at the other end, which latter in turn is pivoted to the valve-stem R, said stem passing through the gland .S and having attached to its lower the spring Uin conjunction With the spring N. The valve-casing V communicates with the superior chamber with the casingA through the nipple WV, and a pipe X leads from said valve-casing to the drain. Y is the inlet-pipe, which leads to the upper compartment of the casing A, and the passage therethrough is controlled by a valve Z. From the lower end of the casing A passes the outlet-pipe o, in which is' also located the valve b for the regulation of the flow throughA said pipe, and this pipe is connected by the vertical branch c and horizontal pipe d to the secondary filter e, co'nsistingof a cylindrical casing similar in -all respects to casing A, and the pipe CZ has located therein a Vvalve f. A

XVithin The casing@ are located the vperforated d iaphragms g, lz, and i. for dividing` said casing into compartments, the upperone of Which is left empty, While the one next below the diaphragm g is filled with silica, as indicated at j, and the bottom compartment is lilled with charcoal, as indicated at l, the diaphragm i serving to support this charcoal and leave a freespace upon the conveyed bottom of the scondary filter for the ready outflow of the Water passing therethrough. This Water is conveyed from the casing by the pipe m and the pipe fn,- in Which is located a valve o, through Which said Water may flow to the location Where it is to be used.

end a valve T, normally held upon its seat by ICO Just above the diaphragm g the pipep enters the secondary filter, and this pipe may lead to the drain and is supplied with a valve q for controlling' an outflow through this pipe. The valves r and s are so located as to permit the reversal of the water-flow to the primary and secondary filter, as will be next expained.

From this description Ithe operation of my invention will be obviously as follows: The valve Z having opened water will flow from the supply-pipe t in the direction of the arrow through the pipe Y to the casing A above the plunger I, and so long as the perforations of this plunger and the meshes of the screen L are unclogged the water will pass through said plunger and thereafter percolate thron gh the gravel G, diaphragm B, charcoal F, and from thence through the outlet-pipe a; but when the plunger has become clogged bythe accumulation of foreign matter thereon the pressure of the infiowing water will be eX- erted upon its uppersurface to overcome the action of the springs N and U, thereby forcing said plunger downward below a nipple W and at the same time lifting the valve T from off its seat, so that the inlowing water may pass through said nipple to the valve-casing and from thence through the pipe X to the drain. Now so long as the plunger remains clogged the pressure of the water will hold it in this lowered position and the flushing thereof will continue until the impurities held thereon have been freed and conveyed to the drain. After this has been accomplished the water will again pass through the plunger, thus relieving the upper side thereof of the plunger, when said plunger will be again elevated above the level of the nipple pipe YV, the action ofthe springs N and U.

Then the filters are normally in operation the valves r and s are closed, so that the water fiowing through the pipe a passes through the branch c and pipe d to the superior compartment of the secondary filter, from whence it is caused to percolate through the silica and charcoal Z before gaining access to the pipe n, which serves to convey it to the point of use. The passing of the water through this secondary filter,afl'er having been previouslyrelieved of the impurities held in mechanical suspension therein, will relieve it of soluble salts or other chemical impurities, as well as producing clarification, so that when leaving the secondary filter it will be absolutely mechanically pure.

To flush the secondary filter, the valvesf and b are closed, while the valves o", s, and q are opened, thus permitting the water from the supply-pipe `tto pass in the reverse direction of the arrow marked next adjacent the branch c, through the valve s, a pipe m, to the bottom of the secondary filter, from whence it will flow upward,removin g the accumulated impurities from the charcoal and silica, and pass to the drain through the pipe p. The iiltering material of the primary filter may also be flushed by closing the valve Z, opening the valves r and b, and depressing the plunger by force exerted upon its rod below the level of the nipple \V, thus permitting the water to flow in the reverse direction of the arrow marked next adjacent the pipe a to the lower portion of the casing A, and from thence upward through the iiltering material and plunger, and fin ally to be drained through the nipple W, valve-casing V, and pipe X.

One of the principal advantages of my improvement is that it cannot become clogged by the accumulation of impurities from the water, since these impurities are automatically flushed from the primary filter, thereby permitting an almost continuous flow of water at nearly the pressure maintained in the supply-pipe t, and upon this fact depends the value of my improvement in connection with the feeding of boilers and the like, since the foreign substances contained within the water are detrimental to a boiler.

While my improvementis specially adapted for such uses, it is equally adapted for use in connection with the service-pipe of dwellings, hotels, and large buildings, since the water passing therethrough will at all times be mechanically and substantiallychemically pure, as well as clarified, thus especially fitting it for the use to which such water is put and from a sanitary standpoint greatly enhancing the value of said water.

Having thus fully described my invention, what I claim as new and useful is- 1. A filter comprising a casing, a filtering agent located therein, a plunger adapted to slide within said casing, said plunger having a rod leading therefrom, means for maintaining the plunger in a normally-elevated position, an inlet-pipe entering the casing above the plunger, an outlet-pipe leading from the casing below the normal position of the plunger, and a valve so connected with the plunger as to be lifted from off its seat when the plunger is forced outward, as specified.

2. In a filter, a casing, a filtering'. agent located therein, a plunger fitted in the upper portion of said casing so as to slide, said plunger being perforated, a rod leading from the plunger, a spring for holding said plunger in a normal position, a valve connected with the plunger by suitable leverage, a cylinder in which said valve is located, an inlet-pipe lead'- ing to the casing above the plunger, and an outlet-pipe leading from the casing below the normal position of the plunger and communicating with the cylinder, substantially as and for the purpose set forth.

3. In combination, a casing, partitions B and C for dividing the interior of said casing into three compartments, filtering material located in the two inferior compartments, a plunger fitted to slide in the upper compartment, a rod leading from said plunger, a spring for elevating the rod and plunger, a valve-cylinder V, a pipe connecting the valvecylinder to the casing, a pipe leading from TOO TIO

said cylinder, a valve adapted to close the passage to the pipe X, a suitable connection between the valve and the plunger-rod, and a pipe ct leading from the casing below the filtering agents, substantially as and for the purpose set forth.

4. The herein-described combination of a primary filter and a secondary filter, the primary filter consisting of a casing divided into three compartments by the partitions B and C both of which are perforated, filtering agents located in the two inferior co1npartments, a plunger fitted to slide within the upper compartment, a rod M connected to said plunger, a spring N coiled about said rod, a lever O pivoted at one end to the rod, a valve-stem connected to the opposite end of said lever, a valvecarried by said stern, a cylinder in which said Valve is located, an inlet-pipe leading to the casing above the plunl ger, a pipe W leading from the casing to the cylinder, and a pipe X leading from the cylinder to a suitable drain, and a pipe ct arranged to connect the primary and secondary filters, substantially as and for the purpose set forth.

5. In combination with a filter of the character described, an outlet-pipe located near the top of the filter, a spring-pressed porous plunger held normally above' the pipo, a valve Controlling the outlet-pipe and adapted to be raised out of its seat when theplunger is depressed below the outlet-opening, substantially as described.

6. A filter havingaporous plunger arranged therein, an outlet-pipe, means for holding the plunger normally above the pipe, said plunger, when clogged being adapted to be depressed below the opening by the pressure of the Water, substantially as described. l

v7. In a device of the characterdescribed, a easing, a plunger therein said plunger con sisting of a perforated receptacle, a filtering agent provided in said receptacle and a screen secured over the filter agent, a pipe leading from said receptacle and a spring for normally holding said, plunger above the pipe, the plunger when clogged being adapted Vto be depressed below the outlet-opening by the pressure of the water overcoming the action of the spring substantially as described.

In testimony whereof I have hereunto affixed my sgnatu re in the presence of two subscribing witnesses.

SAMUEL C. PARSOIIS.

Witnesses:

S. S. WILLIAMSON, MARK BUFORD. 

